Roadblocker systems are not manufactured with only a crush resistant cage.
All system related parts are protected against terrorist acts.
It is always up against terrorist acts that can be carried out on the hydraulic system, hydraulic hoses, electronic components or any other system components.
Frequency Disruptors (jammer) can not affect it.
I mean, the Road Blocker is not a bunch of iron coming up and down.
In a road blocker barrier system, mechanical-electronic-hydraulic components and design are very important.